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Abhyuday Tiwari from Doon International School, Dehradun
Subject :NSO    Class : Class 6

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Ayush Anand Sharma from GEMS international school , Gurgaon
Subject :NSO    Class : Class 6

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nishant doshi from new era senior secondary school nizampura vadodara, Vadodara
Subject :NSO    Class : Class 6

Three different types of materials X, Y and Z were used in the experiment shown below here. In both circuits, the bulbs lighted up.

Another different circuit was set up and three of the materials were placed at three different positions, Q1, Q2 and Q3.

Based on the above circuits, which one of the following is wrong?
Positions in the circuit--- Light bulbs

Q1 Q2 Q3 B1 B2 B3
A X Y Z No Yes No
B Y Z X Yes Yes No
C Z X Y Yes No Yes
D X Z Y No No No


not understanding

Ans 1:

Falguni from Navkis, Bangalore
Class : Class 7
Can someone explain it ,please??

Ans 2:

Samitha Kumar from Boaz Public School , Chennai
Class : Class 7

Ans 3:

ADITHYA B SOMARAJ from chinmaya vidyalaya thripunithura, cochin
Class : Class 3
And is A since X is insulator it doesn't allow electricityTo pass through so nothing glows

Ans 4:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
Answer supposed to be b

Ans 5:

aikya from psbn, bangalore
Class : Class 5
someone please explainnnnn

Ans 6:

Samitha Kumar from Boaz Public School , Chennai
Class : Class 7

Ans 7:

PS Gour from Chirec international schoo The best 30 years and beyond, Hyderabad
Class : Class 8
plz answer

Ans 8:

Aarav Srivastav from DWPS , Noida Extension
Class : Class 7
ANSWER IS B

Ans 9:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 8
The answer is C as if assume x as a insulator , all other condition satisfy

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UTKARSH SAWARN from AIR FORCE SCHAOOL AMBALA CANTT, AMBALA CANTT
Subject :NSO    Class : Class 7

Ans 1:

sunil agrawal from DPS chandigarh, Mohali
Class : Class 7
Wrong answer provided . Even the solution says answer d

Ans 2:

Sainyam Sharma from Thakur Public School, Mumbai
Class : Class 7
Answer is C

Ans 3:

swayam aditya from LR DAV public school, Cuttack
Class : Class 8
eplanation given is correct but answer is option d

Ans 4:

Hritvi from Podar International School, Mumbai
Class : Class 7
Forget about the Option C. Option D is the right answer.

Ans 5:

Krishna Srivastava from manipal public school, lucknow
Class : Class 7
Option D

Ans 6:

Hritvi from Podar International School, Mumbai
Class : Class 7
Q also can be cockroach. Thus in my OPINION C can also be the answer

Ans 7:

Shourya Mundra from Lotus Valley International School NOIDA, Ghaziabad
Class : Class 8
Answer should be D. Solution provided by them says so too.

Ans 8:

Bhumi Chheda from SVKM J V Parekh International School, Mumbai
Class : Class 8
The answer has to be D because they have asked for the incorrect option

Ans 9:

Ahaan Pathak from Treamis World School, Bangalore
Class : Class 8
Its Option D

Ans 10:

Amishee Surya from bgsnps, Bengaluru
Class : Class 8
answer should be A. They have asked for the INCORRECT OPTION and A is incorrect. Earthworm uses skin not trachea. The answer is A. It also appears in my solution

Ans 11:

SUNIL KHANDELWAL from Bhartiya Bhavans, Kolkata
Class : Class 7
but the question says to choose incorrect answer

Ans 12:

Hritvi from Podar International School, Mumbai
Class : Class 7
Option D is the right answer. The Solution also tells the same then how can they say our answer is wrong?? Try putting this question in the "ERROR" box

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aditya arora from Heritage Experiential Learning School, gurugram
Subject :NSO    Class : Class 6

Ans 1:

Pragyan Srivastava from Manipal Public School, Lucknow
Class : Class 8
The correct answer is option B . A compass may be used to find East and west direction . Once you find North and South , by facing north , the right side will be East and left one will be West

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Ans 1:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 7
as per Wikipedia no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

Ans 2:

Pratham Dave from GNS, Bangalore
Class : Class 6
2 and 4 is the answer to this question

Ans 3:

Shourya Ganesh from The Green Acres Academy, Mumbai
Class : Class 6
no volcano had erupted on Venus in the past 2.5 million years so 2 is the only correct option

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Arnav kaul from Chirec, Hyderabad
Subject :NSO    Class : Class 5

Study the given passage.
X, Y and Z are different parts of the brain. X controls musculo-skeletal movement, Y controls learning ability and memory and Z controls activities such as breathing, heartbeat and blood circulation. Identify X, Y and Z and select the incorrect statement regarding them.

AX is the largest part of the brain whereas Z connects the brain to spinal cord.
BY is the upper part of brain also controls our sense organs.
CZ is also called brain stem and it works even when we are asleep.
DX is located below Y towards the back of the brain.


Ans 1:

Harsh Gupta from saint anslems pink city jaipur , Jaipur
Class : Class 5
Both A and C are correct

Ans 2:

Sonika from Delhi public school, Faridabad
Class : Class 7
THERE CHECKING IS WRONG AS ANSWER IS C

Ans 3:

Pratham Dave from GNS, Bangalore
Class : Class 6
B is the answer to this question but it is showing A as correct option and it is showing B as correct option in the solutions.

Ans 4:

Pragun goel from Venkateshwar International School, Delhi
Class : Class 7
This question is correct

Ans 5:

PARUL GHARSE from Vibgyor, Mumbai
Class : Class 6
cerebrum is the largest part of the brain. cerebellum is the second largest part and it controls musculo-skeleton movement

Ans 6:

rajanya mandal from j h ambani, surat
Class : Class 4

Ans 7:

vayurve gowda from narayana group of schools, chennai
Class : Class 6
this question is wrong

Ans 8:

Ayushman from Adamas International School, Kolkata
Class : Class 6
Correct answer should be d because cerebellum is below cerebrum, located towards the back of the brain.

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Devansh from mmvm, Udaipur
Subject :NSO    Class : Class 3

Which of the following holds true for water transport?
1. It provides door to door service.
2. Perishable goods like milk, fruits and vegetables are quickly carried by it.
3. It is very useful for transporting heavy and bulky goods.
4. It is a better mode of transportation for petroleum and its products as it involves crosscontinental transfers.
5. It is very useful at the time of natural or any other calamities for saving people or supplying goods of their basic requirements immediately.

A 3 and 4
B 1, 2 and 5
C 2, 3 and 4
D 4 and 5

Ans 1:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
A

Ans 2:

Mohi from Vibgyor, Bangalore
Class : Class 1
A

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PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR
Subject :NSO    Class : Class 6

Ans 1:

lavanya from sacred heart convent school, raikot road Barnala , Barnala
Class : Class 3

Ans 2:

Ashwak from Cambridge International School, Saudi Al Dera
Class : Class 7
YES , their answer is not matching with their solution !!

Ans 3:

Surya from INDIAN SCHOOL JALAN OMAN, Alkamil oman
Class : Class 7
they aren't giving the answer and the solution same in some papers

Ans 4:

Dheeraj Thriyambak M from Sri Sankara Senior Secondary School Adyar, Chennai
Class : Class 6
NA

Ans 5:

shrenik from anand niketan, Ahmedabad
Class : Class 8
yes !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 6:

Praneeth from Null, Null
Class : Class 7
What is this? Answer and solution are completely different, they are not matching!

Ans 7:

Shriya Prakash from NPS International, Singapore
Class : Class 6
Although the explanation is correct, it does not match the answer

Ans 8:

Arsh from Lahs, Gwalior
Class : Class 8
ayush u are right!!!!!!!!!!!!!!!

Ans 9:

arpan bar from Future Bhubaneswar School, BHUBANESWAR
Class : Class 7
Given correct answer and explanation do not match...please rectify...

Ans 10:

ADRIJA SAHA from DPS RANIPUR, Haridwar
Class : Class 6
The answer does not match with the solution. There should be a change in the answer.

Ans 11:

Arsh Gupta from Cambridge International School, Jalandhar
Class : Class 7
The option selected here is wrong.

Ans 12:

Kanak Bhowal from Julien Day School, Kolkata
Class : Class 8
clear objection

Ans 13:

Amishee Surya from bgsnps, Bengaluru
Class : Class 8

Ans 14:

Ishir Jha from Keshav Saraswati Vidya Mandir, Patna
Class : Class 7
The ans is not matching!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 15:

arpan bar from Future Bhubaneswar School, BHUBANESWAR
Class : Class 7

Ans 16:

Ayush Anand Sharma from GEMS international school , Gurgaon
Class : Class 8
please explain. your solution doesn't match the correct answer provided by you.

Ans 17:

shrenik from anand niketan, Ahmedabad
Class : Class 8

Ans 18:

SHIRIN BHATTACHARYYA from Banyan Tree School, CHANDIGARH
Class : Class 7

Ans 19:

Arjun gupta from Dps noida , Noida
Class : Class 7
why arent they changing the answer

Ans 20:

Vikram from AVM, Mumbai
Class : Class 5

Ans 21:

Shriya Prakash from NPS International, Singapore
Class : Class 6

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PRADYUMNA OMPRAKASH GONDULE from DPS BHILAI, Bhilai
Subject :NSO    Class : Class 6

Ans 1:

SOURADEEP SHARMILA MANDAL from KENDRIYA VIDYALAYA IISC, Bengaluru
Class : Class 7
I THINK IT COMPLETES 25 OSCILLATIONS IN 5s

Ans 2:

Ritvik Nainawatee from Freedom International School, BANGALORE
Class : Class 6
The answer has to be 0.2 seconds(5/25). Pls correct

Ans 3:

shashwat from vidyashram, jaipur
Class : Class 8
please explain the answer

Ans 4:

shrawan azad from DPS VASANTKUNJ NEW DELHI, New Delhi
Class : Class 4
Answer is wrong

Ans 5:

Lakshya Gupta from Manthan, Hyderabad
Class : Class 6

Ans 6:

Angela M Dodmani from The jain International school, HUbli
Class : Class 7
The answer is wrong. It is 0.2

Ans 7:

Kanak Bhowal from Julien Day School, Kolkata
Class : Class 8
the answer is wrong , it should be 0.2s. please kindly provide the solution to this question.

Ans 8:

Anoop Haridas from dpsmis doha, doha
Class : Class 8
I think this answer is wrong. It should be 0.2 seconds, according to the definition of a Time Period in oscillatory motion.

Ans 9:

Prajith Kumaran from RCIS, Bangalore
Class : Class 7

Ans 10:

PRISHA WAGH from G D SOMANI MEMORIAL SCHOOL, MUMBAI
Class : Class 7
wrong answer. should be 0.2s

Ans 11:

Aritra Porey from DPS Bangalore North, Bengaluru
Class : Class 8
According to definition - answer would be 0.2 s

Ans 12:

PARNIKA SINGH from GYAN GANGA EDUCATION ACADEMY, RAIPUR
Class : Class 8
answer is wrong it should be 0.2 s

Ans 13:

kiyoshi from st xavier high school, Jaipur
Class : Class 6
The answer should be 0.2 s

Ans 14:

aditya arora from Heritage Experiential Learning School, gurugram
Class : Class 8
According to definition - answer would be 0.2 s

Ans 15:

Bhumi Chheda from SVKM J V Parekh International School, Mumbai
Class : Class 8
the answer is wrong

Ans 16:

Kaushik Bhattacharya from LVIS, NOIDA
Class : Class 7
The answer seems to be wrong. 5 seconds to complete 25 oscillations. That means for one oscillation it is 5/25 = 0.2 seconds. 'Period' usually means one complete oscillation that is 0.2 seconds and that is not given.

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